本题目来源于试卷: Mechanisms of Chemical Change F.1 Proton Transfer Reactions，类别为 IB化学
[单选题]
Given the following indicators and the 7xh10rd4ejloz/ft*s ir behav 5i9 k f2:hlqltiours, what will be the correct colours of a solution of 1.0 M KOH tested with each indicator?
fl9h5lq:i t2k | Indicator | pH range | Colour change (Acid- alkali) | | Methyl orange | 3.1- 4.4 | Red – Orange | | Bromocresol green |
3.8 - 5.4 | Yellow - Blue | | Phenolphthalein | 8.3 - 10.0 | Colourless - Pink |
A. Methyl orange is Red Bromocresol green is Yellow Phenolphthalein is Colourless
B. Methyl orange is Orange Bromocresol green is Blue Phenolphthalein is Pink
C. Methyl orange is Orange Bromocresol green is Blue Phenolphthalein is Colourless
D. Methyl orange is Orange Bromocresol green is Yellow Phenolphthalein is Pink
参考答案: B
本题详细解析:
A 1.0M solution of KOH would have a pH of 14. Methjh8wkd15p66uh c j.cv dk u/e0yl orange, bromocresol green, and phenolphthalein would be oranged.jc ech51ukpv6k8w0/ ud6jh, yellow, and green respectively at this pH.
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